The Double Cluster – yet again

I just can’t keep away from this region, and as there was a half-Moon up until 11 p.m. last night, a star cluster seemed like a good idea.

This is another one of those images I have had in my mind for over a decade.  This would take an 8-framer with the Sky 90s and I never had a good enough run of weather to get it all done in one season.  However, it is only a 2-framer with the Canon 200mm prime lenses, so it can be done in a single evening using those.

A 2-framer with the Canon 200mm prime lenses and Trius M26C OSC CCDs, each frame is around 3-hours total exposure time using 450-second subs.

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